Tomcat prints this:
May 12, 2006 5:03:52 PM org.apache.catalina.startup.HostConfigcheckResources
INFO: Undeploying context [/universal-agc]
May 12, 2006 5:03:52 PM
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessorprocessChildren
SEVERE: Exception invoking periodic operation:
java.lang.NullPointerException
at org.apache.catalina.core.ContainerBase.removeChild(
ContainerBase.java:883)
at org.apache.catalina.startup.HostConfig.checkResources(
HostConfig.java:978)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java
:1172)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(
HostConfig.java:292)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(
LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.backgroundProcess(
ContainerBase.java:1305)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren
(ContainerBase.java:1569)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren
(ContainerBase.java:1578)
at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(
ContainerBase.java:1558)
at java.lang.Thread.run(Thread.java:595)
In an endless cycle.
On 5/12/06, Paul Cantrell <[EMAIL PROTECTED]> wrote:
A complete stack track trace might help; "NullPointerException" by
itself doesn't say much....
On May 12, 2006, at 10:31 AM, Rui Pacheco wrote:
> Hi all again
>
> I am trying to create a custom component for my menu, header and
> footer. I
> created a Menu.html whose content is a simple html table.
> I created a .jwc file in my WEB-INF directory with the following
> content:
>
> <component-specification class="org.apache.tapestry.BaseComponent"
> allow-body="no" allow-informal-parameters="no">
> </component>
>
> But when I deploy my application, Tomcat starts dumping this error
> in an
> endless loop:
>
> May 12, 2006 4:29:41 PM
> org.apache.catalina.core.ContainerBase
> $ContainerBackgroundProcessorprocessChildren
> SEVERE: Exception invoking periodic operation:
> java.lang.NullPointerException
> ...
>
> I am following these pages on creating custom components, but I
> cant find
> out what is it I'm doing wrong:
> http://jakarta.apache.org/tapestry/UsersGuide/components.html
> http://jakarta.apache.org/tapestry/tapestry/ComponentReference/
> RenderBlock.html#Example
> --
> Cumprimentos,
> Rui Pacheco
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Cumprimentos,
Rui Pacheco
